import 'package:flutter/widgets.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:go_router/go_router.dart';
import 'package:riverpod_annotation/riverpod_annotation.dart';
import 'package:sunny_mochi/core/observability/talker_setup.dart';
import 'package:sunny_mochi/features/auth/presentation/notifiers/auth_status_provider.dart';

import 'routes.dart';

part 'app_router.g.dart';

// 不需要登录即可访问的路径
const _publicPaths = {'/login'};

@Riverpod(keepAlive: true)
GoRouter appRouter(Ref ref) {
  final auth = ref.read(authStatusProvider);

  return GoRouter(
    debugLogDiagnostics: true,
    initialLocation: '/home',
    refreshListenable: auth.listenable,
    redirect: (BuildContext context, GoRouterState state) {
      final loggedIn = auth.value;
      final path = state.matchedLocation;
      appTalker.verbose('[Router] path=$path loggedIn=$loggedIn');

      if (loggedIn == null) return null; // bootstrap 未完成，保持当前
      if (!loggedIn && !_publicPaths.contains(path)) return '/login';
      if (loggedIn && path == '/login') return '/home';
      return null;
    },
    routes: $appRoutes,
  );
}